IBC SFC-199 User manual

120-260E |1
Note
Ifconvertingfrompropanetonaturalgas,orderthenaturalgasconversionpartskit(IBCPart#P-845)from
yourauthorizedIBCdistributor.
Usethepropanegasconversionpartskitifthefuelsourceatthesiteusespropaneandtheappliancehasbeensetup
(factoryfire-tested)tooperatewithnaturalgas.Checktheratingplatetoseewhichfuelsourcetheparticularappliance
hasbeensetupwith.
Usingthisconversionkit,aqualifiedtechnicianwillneedto:
1. Performafuelconversion.
2. Performacombustiontest.
3. Fillintheinformationrequiredonthefuelconversionlabels,andaffixthemtotheapplianceaftertheconversionis
completed.
Warning
Thisconversionkitshallbeinstalledbyaqualifiedserviceagencyinaccordancewiththemanufacturer’s
instructionsandallapplicablecodesandrequirementsoftheauthorityhavingjurisdiction.Iftheinformationin
theseinstructionsisnotfollowedexactly,afire,anexplosionorproductionofcarbonmonoxidemayresult
causingpropertydamage,personalinjuryorlossoflife.
Thequalifiedserviceagencyisresponsiblefortheproperinstallationofthiskit.Theinstallationisnotproper
andcompleteuntiltheoperationoftheconvertedapplianceischeckedasspecifiedinthemanufacturer’s
instructionssuppliedwiththekit.
Theappliancewillautomaticallyde-ratethemaximuminputatarateofapproximately2%per1,000’above4,500’.The
gasvalve'szero-governorwillensurethatthegas-airmixtureisnotaffectedataltitude.
Includedwiththeconversionkit:
1xOrifice-marked535-IBCPart#180-174
1xO-ring-IBCPart#150-175
1xRatingPlateFuelOverlay-IBCPart#080-272A
1xGasValveConversionLabel-IBCPart#080-107B
1xInstallerIdentificationLabel-IBCPart#080-211A
SFC-199 - Fuel Conversion to Propane
(NG to LP) Kit P-844

Combustion Test Target Ranges
Figure: Gas valve and fan
TheLowFire(zero-offset)valveadjustmentcaponthegasvalvehasbeenfactoryset.Donotadjustthisscrewinthefield
unlessindicatedintheseinstructions.
Afterconvertingtheappliancetopropane,acombustion(CO2)readingmustbetakenbyaqualifiedtechnicianusing
properlyfunctioningandcalibratedcombustionanalyzingequipmentandtheresultscomparedtothevaluesinTable1.
Propane CO2 Value (%) at High Fire with front
cover open
CO2 Value (%) at Low Fire with front
cover open
Max.CO2value 11.5% ValueatHighFireMinus -0.3%
Min.CO2value 9.8% 9.5%
Table 1 - CO2 values at High and Low Fire
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SFC-199 - Fuel Conversion to Propane (NG to LP) Kit P-844 |3
Fuel Conversion Instructions
Youmustbeaqualifiedtechniciantoperformafuelconversion.
Model Number Orifice Size
SFC-199 535
Table 2 - Propane Orifice Chart
To perform a fuel conversion:
1. Turnoffthegassupplyatthegasshut-offvalve.
2. Disconnecttheelectricalpower.
3. Disconnectthenutatthegasvalveoutlet(topofthegasvalve),andremovetheO-ringandorifice.
4. InsertthecorrectorificeintotheO-ring,andre-installintothenutatthegasvalveoutlet(topofthegasvalve),
andthentightenthenut.
5. Restorethegassupplybyopeningthegascontrolvalve.
6. Testforleaksbyusinganapprovedleakdetectionsolutiononalljoints.
7. Powerontheappliance.
Now,carefullyfollowtheproceduresonCombustionTestingandAdjustment.

Combustion testing and adjustment
Danger
Acombustiontestchecksthatthegasvalveisoperatingproperlyinthefield.Toperformacombustiontest,you
mustbeaqualified,trainedandlicensedgasfitter.
Makingadjustmentstothegasvalvewithoutaproperlycalibratedgascombustionanalyzerandbypeoplewho
arenottrainedandexperiencedinitsuseisforbidden.Failuretouseananalyzercanresultinanimmediate
hazard.
Model Number High Fire Input
SFC-199 125MBH(onaheavyload,only
DHWprovidesfullinputof199
BTUs)
Table 3 - Rated input of a converted appliance
Normalignitionsystemsequenceofoperation:
Theappliance'scontrol,uponacallforDHW,turnsonthecombustionfanforashortpre-purge,thenenergizesthespark
electrodeandgasvalvefora5-secondtrialforignition.
Iftheburnerdoesnotlight,theprocessisrepeateduntiltheburnerlightsandflameisdetected.After4unsuccessfultrials
forignition,theappliancelocksoutandwillneedtobemanuallyresetbypressingtheReturnArrow button.
To perform a combustion test and adjustment:
1. Turnofftheappliance’sgasshut-offvalve.
2. Withasmallflatscrewdriver(1/8"or3mm),opentheinletgassupplypressuretest
portbyturningitsscrew1fullturncounterclockwise.
3. Attachamanometertotheinletpressuretestportandturnongastoappliance.
Staticmanometerreadingshouldbeideally11"w.c.forpropane.
Minimumandmaximumstaticpressuremustbebetween5"and14"w.c.
Monitorpressurethroughoutthecommissioning(start-up)procedure.
Pressuremaydroopupto1"w.c.athighfire.
4. Tosettheappliancetohighfiremanually,createalargedemandbyturningupallthethermostatsorcreatealarge
DHWdemandfortheappliancetoheat.
Note:AllowtheappliancetooperateatHighFirefor3minutestostabilize.(Theapplianceoperatesinmanual
modefor10minutesthenswitchbacktothenormaloperatingmode.Toextendmanualmodeoperation,pressthe
Service andPlusbuttonstogethertwicewhiletheapplianceisoperatinginmanualmodetoresetthetimerfor10
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SFC-199 - Fuel Conversion to Propane (NG to LP) Kit P-844 |5
moreminutes.)Donotmakeadjustmentsiftheservicedisplayshowsan“h”,indicatingthattheappliancehas
reducedoutputbecauseitisbecomingtoohot.
5. Clockthegasmeter(seeinstructionsClocking the Meter (for Natural Gas only) on page 6)toconfirmfull
maximumratingplateinput.
a. Withacombustionanalyzerprobeinthefluegastestport,checkthemeasuredresultsagainstTable 1 -
HighFire.
b. Iftheresultsareoutsidethepermittedrange,checktheinletpressure,andconfirmthatthecorrectorifice
andventuriareinstalled.
6. SwitchtheappliancetolowfirebypressingtheServicebuttonandMinusbuttonsatthesametime.The
appliancewilldroptolowfire.“L”willshowintheservicedisplay.
a. ComparethereadingswithTable 1 -LowFire.Ifadjustmentisnecessary,removetheLowFire
AdjustmentcaptorevealaTorxheadscrew.
b. Maketinyadjustments,typicallylessthan1/8thofaturnatatime.Turnthescrewclockwisetoincrease
CO2andcounter-clockwisetoreduceCO2.Ifthetargetcannotbemet,evenafterahalfturn,contactthe
factory.
c. Whenfinished,replacetheLowFirecap,andleavethemanualmodebypressing+AND-
simultaneously.
7. Switchofftheappliancebypressingthespaceabovethewhitedot.
8. Turnoffthegasattheappliance'sgasshut-offvalve.
9. Removethefluegasanalyzerfromthetestport,andreinstallthetestportcap.
10. Removethegaspressuremanometerfromthegasvalve,andclosethetestport.
11. Turnonthegasattheappliance’sgasshut-offvalve.
12. Ensuretherearenogasleaksbeforereinstallingthefrontcover.
13. Turnontheappliancebypressingthespaceabovethewhitedot.
Completing and Affixing the Conversion Labels
1. Fillintheconversionlabels(includedinthekit)associatedwiththenewfueltype.
2. Placetheconversionlabelsontotheapplianceasindicatedonthelastpage.

Clocking the Meter (for Natural Gas only)
1. Turnoffallotherappliancesandpilots.
2. Turnontheapplianceandsettheappliancetohighfire.
3. Ensuretheappliancehasalargeloadtoheat,sothattheappliancewillnotshutoff.
4. WithaStop-Watch,recordthenumberofsecondsforthesmallestdialtomake1fullrevolution.
5. CFH=(3600xDialSize)/Seconds.
6. CFHx1000(checklocalBtucontent)=InputBtu’s.
Note
For2PSImetersmultiplyCFHx1.097
ForMetricmetersmultiplyCFHx35.3
For2PSImetricmetersmultiplyCFHx1.097x35.3
ForAltitudeabove4,500'deduct2%per1,000’ofaltitudefromtheInputBtu’s.
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SFC-199 - Fuel Conversion to Propane (NG to LP) Kit P-844 |7
Where to Place Conversion Labels on the appliance